/* =============================================
   Workplace EHS Coalition — Stylesheet
   ============================================= */

/* --- Variables --- */
:root {
    --color-primary: #1a3a5c;        /* Navy — header, footer, structural */
    --color-red: #D0202E;            /* Brand red — hero accents, highlights */
    --color-green: #2E7D32;          /* Brand green — primary accent, buttons, links */
    --color-teal: #4A9CC7;           /* Brand teal — secondary accent, cards */
    --color-accent: #2E7D32;         /* Default accent = green */
    --color-accent-light: #e8f5ee;   /* Light green tint for bg */
    --color-teal-light: #e8f4fa;     /* Light teal tint */
    --color-red-light: #fdecea;      /* Light red tint */
    --color-text: #2c2c2c;
    --color-text-muted: #5f6368;
    --color-bg: #ffffff;
    --color-bg-light: #f7f8fa;
    --color-border: #e0e4e8;
    --font-display: 'Source Serif 4', Georgia, serif;
    --font-body: 'DM Sans', sans-serif;
    --max-width: 1100px;
    --radius: 8px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-body); color: var(--color-text); background: var(--color-bg); line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: var(--color-red); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }

/* --- Container --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* --- Header --- */
.site-header { background: #ffffff; padding: 16px 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,0.08); border-bottom: 3px solid var(--color-red); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; }
.logo-img { height: 48px; width: auto; }
.logo-placeholder { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; color: var(--color-primary); letter-spacing: -0.01em; }

/* --- Nav --- */
.site-nav .nav-links { display: flex; gap: 8px; }
.site-nav .nav-links a { color: var(--color-text); font-size: 0.95rem; font-weight: 500; padding: 8px 14px; border-radius: var(--radius); transition: background 0.2s, color 0.2s; }
.site-nav .nav-links a:hover, .site-nav .nav-links a.active { background: var(--color-primary); color: #ffffff; text-decoration: none; }
.nav-toggle { display: none; background: none; border: none; color: var(--color-primary); font-size: 1.5rem; cursor: pointer; transition: transform 0.2s ease; line-height: 1; padding: 4px; }

/* --- Hero --- */
.hero { background: var(--color-primary); color: #fff; padding: 80px 0 72px; border-bottom: 4px solid var(--color-red); }
.hero h1 { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 600; line-height: 1.2; margin-bottom: 20px; max-width: 700px; }
.hero p { font-size: 1.1rem; color: rgba(255,255,255,0.85); max-width: 640px; margin-bottom: 32px; }
.btn { display: inline-block; padding: 12px 28px; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; transition: all 0.2s; cursor: pointer; }
.btn-primary { background: var(--color-green); color: #fff; }
.btn-primary:hover { background: #245f27; text-decoration: none; color: #fff; }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.5); margin-left: 12px; }
.btn-outline:hover { background: rgba(255,255,255,0.1); text-decoration: none; color: #fff; }

/* --- Section --- */
.section { padding: 72px 0; }
.section-alt { background: var(--color-bg-light); }
.section-title { font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 600; color: var(--color-primary); margin-bottom: 12px; }
.section-subtitle { color: var(--color-text-muted); font-size: 1.05rem; margin-bottom: 48px; max-width: 600px; }

/* --- Section title accent bar --- */
.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--color-red);
    margin-top: 10px;
    border-radius: 2px;
}

/* --- Centered section title accent bar --- */
.section-title.centered::after {
    margin-left: auto;
    margin-right: auto;
}

/* --- Principle Cards --- */
.principles-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.principle-card { background: #fff; border: 1px solid var(--color-border); border-top: 3px solid var(--color-teal); border-radius: var(--radius); padding: 32px; transition: box-shadow 0.2s, transform 0.2s; }
.principle-card:hover { box-shadow: 0 8px 24px rgba(0,0,0,0.08); transform: translateY(-2px); }
.principle-number { font-size: 0.8rem; font-weight: 600; color: var(--color-teal); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 10px; }
.principle-card h3 { font-family: var(--font-display); font-size: 1.2rem; color: var(--color-primary); margin-bottom: 12px; line-height: 1.3; }
.principle-card p { color: var(--color-text-muted); font-size: 0.95rem; }
.principle-card .card-link { display: inline-block; margin-top: 16px; font-size: 0.9rem; font-weight: 600; color: var(--color-red); }

/* --- Principles Page --- */
.principle-block { padding: 40px 0; border-bottom: 1px solid var(--color-border); }
.principle-block:last-child { border-bottom: none; }
.principle-block .principle-number { font-size: 0.85rem; font-weight: 600; color: var(--color-teal); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 8px; }
.principle-block h2 { font-family: var(--font-display); font-size: 1.6rem; color: var(--color-primary); margin-bottom: 16px; }
.principle-block p { color: var(--color-text-muted); max-width: 720px; }
.pdf-cta { background: var(--color-accent-light); border: 1px solid #b2dcc2; border-left: 4px solid var(--color-green); border-radius: var(--radius); padding: 24px 28px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-top: 48px; }
.pdf-cta p { font-weight: 500; color: var(--color-primary); margin: 0; }

/* --- Members Table --- */
.members-table-wrap { overflow-x: auto; }
.members-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.members-table th { background: var(--color-primary); color: #fff; padding: 12px 16px; text-align: left; font-weight: 500; }
.members-table th:first-child { border-left: 4px solid var(--color-red); }
.members-table td { padding: 10px 16px; border-bottom: 1px solid var(--color-border); color: var(--color-text); }
.members-table tr:nth-child(even) td { background: var(--color-bg-light); }
.members-table tr:hover td { background: var(--color-teal-light); }
.members-note { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 12px; }

/* --- Sign On CTA --- */
.signup-cta { background: var(--color-primary); color: #fff; border-radius: var(--radius); padding: 56px 48px; text-align: center; margin-top: 64px; border-top: 4px solid var(--color-red); }
.signup-cta h2 { font-family: var(--font-display); font-size: 1.8rem; margin-bottom: 16px; }
.signup-cta > p { color: rgba(255,255,255,0.85); margin-bottom: 40px; max-width: 560px; margin-left: auto; margin-right: auto; line-height: 1.7; }
.signup-cta-actions { display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap; }
.qr-block { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.qr-wrap { display: inline-block; background: #fff; padding: 10px; border-radius: var(--radius); }
.qr-wrap img { width: 100px; height: 100px; display: block; }
.qr-label { font-size: 0.8rem; color: rgba(255,255,255,0.65); letter-spacing: 0.04em; }

/* --- Footer --- */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.75); padding: 48px 0 24px; margin-top: 80px; border-top: 4px solid var(--color-red); }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 48px; margin-bottom: 40px; }
.footer-brand p { font-size: 0.9rem; margin-top: 12px; max-width: 320px; color: rgba(255,255,255,0.65); }
.footer-logo { height: 40px; width: auto; margin-bottom: 8px; }
.footer-links ul { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { color: rgba(255,255,255,0.75); font-size: 0.9rem; }
.footer-links a:hover { color: #fff; text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; font-size: 0.85rem; }

/* --- Two Column Layout --- */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.col-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; }
.col-card-title { font-family: var(--font-display); font-size: 1.2rem; color: var(--color-primary); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 2px solid var(--color-red); display: inline-block; }
.col-list { display: flex; flex-direction: column; gap: 20px; }
.col-list li { list-style: none; }
.col-list li strong { display: block; color: var(--color-primary); margin-bottom: 4px; }
.col-list li p { color: var(--color-text-muted); font-size: 0.95rem; margin: 0; }
.contact-list { display: flex; flex-direction: column; gap: 16px; }
.contact-list li { list-style: none; color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.6; }
.contact-list li strong { color: var(--color-primary); }

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .site-nav { position: static; }
    .site-nav .nav-links { display: none; flex-direction: column; position: absolute; top: 80px; left: 0; right: 0; background: #ffffff; border-bottom: 3px solid var(--color-red); padding: 8px 16px 16px; gap: 2px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); z-index: 200; }
    .site-nav .nav-links.open { display: flex; }
    .site-nav .nav-links a { color: var(--color-text); padding: 10px 14px; border-radius: var(--radius); display: block; }
    .site-nav .nav-links a:hover, .site-nav .nav-links a.active { background: var(--color-primary); color: #ffffff; }
    .site-header { position: relative; }
    .hero { padding: 48px 0; }
    .hero .btn { display: block; width: 100%; text-align: center; margin-left: 0; margin-bottom: 12px; }
    .hero .btn-outline { margin-left: 0; border-color: rgba(255,255,255,0.6); }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
    .pdf-cta { flex-direction: column; }
    .signup-cta { padding: 32px 24px; }
    .signup-cta-actions { flex-direction: column; gap: 32px; }
    .two-col { grid-template-columns: 1fr; }
}